The investigation of the resistance to purple spot of soybean in Huanghuai Zoneindicated that variety with the resistance to the disease were 46%, middle resistant were 29%, middle sensitive were 11% and sensitive were 14%.

• 通过对黄淮流域主栽的 2 8个大豆品种 (系 )抗紫斑病的调查表明 :有 46%25的品种抗紫斑病 ,中等抗性品种占 2 9%25 ,中感品种占 11%25 ,14%25的品种感紫斑病。